"post meridiem" ("after noon").
Meridian is the Latin word for Noon. Ante Meridian (AM) means before noon, and Post Meridian (PM) means after noon.
PM means at night or at noon
This is not really a question. AM stands for ante meridiem which means before noon. PM stands for post meridiem which means after noon.
one means morning and the other means after noon
am means ante meridiem = before noon (time between midnight and noon - 0:00 -12:00), pm means post meridiem=after noon (time between noon and midnight - 12:00- 12:00).
Neither. The correct way to identify 12:00 is to say 12:00 noon or 12:00 midnight.am stands for ante meridiem which means before noon and pm stands for post meridiem which means after noon. Since noon itself is neither before noon or after it, the use of am and pm is not appropriate. The same argument can be applied to midnight.
“AM” stands for the Latin phrase Ante Meridiem —which means “before noon”—and “PM” stands for Post Meridiem : “after noon.”
PM.
Noon is PM, midnight is AM.
Post Meridiem "AM" means ante meridiem, or before noon. "PM" means post meridiem, or after noon. The "M" is the meridiem, or middle. In our day, that is noon, or 12:00 PM ... Meridiem being of Latin origin is often spelled incorrectly as Meridian.
AM stands for Ante Meridian - meaning before noon and PM is Post Meridian - after noon.
Midnight to Noon is AM. Noon to midnight is PM.